| Breaking Capacity: | High Voltage Circuit Breakers |
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| Operation: | Electric Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | SF6 |
| Installation: | Fixed |
| Structure: | Vcb |
| Samples: |
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| Customization: |
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Audited Supplier a. Get ready to experience the ultimate outdoor small ceramic column structure circuit breaker! Equipped with the powerful CT14 spring operation mechanism, this circuit breaker is a breeze to install. Not only is it convenient to adjust, but it also guarantees reliable operation, making it perfect for frequent use. With a remarkable mechanism service life of over 3000 times, you can trust that this circuit breaker will stand the test of time.
b. Say goodbye to weak breaking capacity and hello to our air-compression arc-extinguishing structure! This circuit breaker boasts an impressive breaking capacity, with total breaking times of up to 12, which is the highest in all of China. You can rest easy knowing that this circuit breaker will handle any electrical overload with ease.
c. We take sealing performance seriously, which is why we've incorporated an imported seal into this circuit breaker. The dynamic seal features a "V" type sealing ring with a spring pressure compensation structure, ensuring a reliable and tight seal. Plus, the transformer secondary wiring board, provided by our trusted cooperative enterprises, guarantees an annual leakage rate of less than 1%. You can trust that this circuit breaker will keep your electrical system safe and secure.
d. Prepare to be amazed by the inner current transformer of this circuit breaker! It utilizes micro crystallizing alloy high magnetic materials, resulting in an accurate class of up to grade 0.2 or grade 0.2S. And that's not all - this circuit breaker can be matched with up to 12 transformers, allowing it to handle load lines of up to 50 km without restrike. It's the perfect solution for all your medium voltage applications.
| Item | Unit | Data | Technical parameter |
| Rated voltage | kV | 40.5 | - |
| Rated insulation level-Lightning impulse withstand voltage(peak) | kV | 185 | - |
| Rated insulation level-1 min P.F. withstand voltage | kV | 95 | - |
| Rated current | A | 2000 | - |
| Mechanical life time | time | 3000 | - |
| Rated air pressure of SF6(psig at 20ºC) | MPa | 0.05 | - |
| Alarm pressure/Min.function pressure (psig at 20ºC) | MPa | 0.47/0.45 | - |
| Rated short-circuit breaking current | kA | 40 | - |
| Rated short circuit making current(peak value) | kA | 100 | - |
| Rated short time withstand current(thermal stability current) | kA | 40 | - |
| Rated peak withstand current(dynamic stability current) | kA | 100 | - |
| Rated out of step breaking current | kA | 10 | - |
| Rated breaking times under short circuit breaking current | time | 12 | - |
| Rated short circuit duration | S | 4 | - |
| Closing time(under rated operation voltage) | S | ≤0.1 | - |
| Opening time(under rated operation voltage) | S | ≤0.06 | - |
| Rated operating sequence | O-0.3s-CO-180s-CO | - | |
| Rated making single capacitor bank current | A | 400 | - |
| Annual leakage rate | % | ≤1 | - |
| SF6 water content(V/V) | ≤150×10-6 | - | |
| Rated operation voltage of matched CT14 spring operation mechanism | - | ||
| Closing and opening coil voltage | V | AC:220 380 DC:48 110 220 | - |
| Energy storage motor voltage | V | AC:220 380 DC:110 220 | - |
| Weight of SF6 gas | kg | 8 | - |
| Weight of circuit breaker(including operation mechanism) | kg | 1400 | - |
| Moving contact travel | mm | 95±2 | Measure moving contact travel |
| Opening distance between contacts | mm | 60±1.5 | Measure distance between moving and fixed contact |
| Pole-to-pole closing synchronous | ms | ≤3 | Measure pole distance difference between moving and fixed contact |
| Pole-to-pole opening synchronous | ms | ≤2 | Measure pole distance difference between moving and fixed contact |
| Main circuit resistance | mΩ | ≤120 | Measure DC voltage reduction |
| Closing speed | m/s | 3.2±0.2 | Rated air pressure, measuring method |
| Opening speed | m/s | 3.4±0.2 | Rated air pressure, measuring method |
| Closing buffer distance | mm | 10+0.5(-1.0) | Under closing state |
| Spacer of closing buffer | mm | 1-2 | Under closing state |
| Partial 48.6kV | Pc | 20 | Measure by partial measuring device under rated air pressure; apply voltage 48.6kV on the two out-line ends of the circuit breaker for 1 min, then reduce the voltage to 28kV to measure |
| Discharge 28kV | Pc | 10 | Measure by partial measuring device under rated air pressure; apply voltage 48.6kV on the two out-line ends of the circuit breaker for 1 min, then reduce the voltage to 28kV to measure |
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